I bought this in Maine at Liberty Tool, which is a used tool store. It is a 2 1/2 by 4 NC. It says Butterfield Derby Line VT. Made in USA. Also, U 4D3.
It is about 3-4 pounds and 8 3/4in long. Pic was just taken in Photobooth. I bought it for $14 and it is quite sharp.
Any info?